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Genshin Impact
How to Use Lost Energy Block in Sumeru and Locations
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Lost Energy Block is an Item found all over Sumeru in Genshin Impact 3.0. Find out how to get all 19 Lost Energy Block Locations, how to use it to Load the Damaged Ruin Guards, and achievement rewards here!
List of Contents
Where to Get Lost Energy Blocks
Lost Energy Block Map Locations
There are a total of 19 Lost Energy Blocks found in Sumeru, around Port Ormos and Devantaka Mountain.
How to Get All Lost Energy Blocks
| Location | |
|---|---|
| 1 |  Found on top of a large gear in the middle of a Withering Zone. This will also be where a docile Ruin Sentinel will appear. |
| 2 |  Found Next to a Damaged Ruin Guard and a Ragged Attendance Record. |
| 3 |  Found on a Damaged Ruin Guard sitting by the water just north of the Sumeru Fishing Association. |
| 4 - 7 |  Four Lost Energy Blocks can be found all around the camp of a group of Eremite enemies, along with a Remarkable Chest. |
| 8 |  Found beside a Damaged Ruin Guard north of Port Ormos and south of Devantaka Mountain. |
| 9 |  Inside the cave near the Lost Energy Block 11, southwards underground on a giant gear. |
| 10 |  By a Damaged Ruin Guard resting under a tree, with a resting Ruin Drake nearby. |
| 11 |  On a large flat gear at the base of the Huge Ruin Machine in Devantaka Mountain. |
| 12 |  Found at the base of large gears on top of a rocky outcrop. |
| 13 |  By a Damaged Ruin Guard at the top of the cliff. |
| 14 |  Found at the end of a large pipe at the base of the Devantaka Mountain. |
| 15 |  On a circular gear on the left side of Devantaka Mountain. |
| 16 |  Inside a blocked cave with the entrance at Vimara Village. You will need the Vintage Lyre to open this cave. |
| 17 |  Found in a large gear part by the side of the road. |
| 18 |  Just inside the entrance to a flooded cave. |
| 19 |  On a large flat gear at the bottom of the flooded cave. Draining the water in this cave is part of the Royinjan's Chapter: Linga Quest. |
All Damaged Ruin Guard Locations
All Damaged Ruin Guards and Ruin Scouts
There are a total of 5 Damaged Ruin Guards to Load. Every Damaged Ruin Guard also has a corresponding Ruin Scout located nearby.
Giving energy to each Damaged Ruin Guard will award an Exquisite Chest, and loading all five Damaged Ruin Guards will give you an Achievement!
How to Use Lost Energy Blocks
Release and Follow the Ruin Scout
Follow the Ruin Scout to the Correct Ruin Guard
Each Ruin Scout will be inside a Dendro Rock Pile that you can destroy using a Dendrogranum and a charged attack. This Ruin Scout won't attack, and instead will act like a Seelie and guide you to a Damaged Ruin Guard.
Another Ruin Sentinel will spawn and you have to defeat both Ruin Sentinels to get an Exquisite Chest. Afterwards, you will be able to interact with the Damaged Ruin Guard and receive a new prompt to load it.
Load the Damaged Ruin Guard
You can use three Lost Energy Blocks to load into a Damaged Ruin Guard. It will start to repeat a string of numbers and symbols but otherwise remain unmoving.
This also means that you only need 15 Lost Energy Blocks in total to get the achievement. The other four Lost Energy Blocks currently have no other use.
No Other Known Uses
It seems that the Dead Ruin Guards and the Lost Energy Blocks are part of an abandoned research venture by a group called the 'Sumeru Investigation Team.'
We've yet to find out what the Ruin Guard's coded message means. Let us know in the comments if you've discovered the meaning of the Ruin Guards' Codes!
Lost Energy Block Achievement
In the Name of Anfortas Achievement
| Achievement | Rank | Primogem Reward |
 In the name of Anfortas
|
★ | 5 Primogems |
|---|---|---|---|
| Objective : Visit the place where the heroes met their end. | |||
Restoring all 5 Damaged Ruin Guards will give you the In the Name of Anfortas Achievement, which rewards 5 Primogems!
Lost Energy Block Effects and Basic Information
 Lost Energy Block
|
Rarity | 1 |
|---|---|---|
| Type | Quest Items | |
| Effect | None |
Blocks refined from pure energy. You can seemingly use it to activate the recording devices of some ancient constructs.
Genshin Impact Related Guides
Other Sumeru Quest Items
List of All Quest Items
Comment
27 
mika 9 months
mika 9 monthsguys, this doesn't exist for me, maybe it was removed? does anyone know?
Author
How to Use Lost Energy Block in Sumeru and Locations
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It does exist, I just did it. Some achievements are hidden and dont show in the list until you complete them.